from tkinter import *

root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")

canvas = Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)

coords = [0, 0, 10, 0 ,10 ,10 ,20, 10 ,20 ,20, 0 ,20]

print('Введите начальную координату X: ')
X = int(input())
print('Введите начальную координату Y: ')
Y = int(input())
print('Введите начальную координату N: ')
N = int(input())

if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500:
    pass
else:
    if N > 0 and 0*N+Y>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
        pass
    else:
        if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print("Размер фигуры превышает максимальный размер поля")
            exit()
canvas.create_polygon(coords[0] *N+X, coords[1] * N+Y,
                      coords[2] *N+X, coords[3] * N+Y,
                      coords[4] *N+X, coords[5] * N+Y,
                      coords[6] *N+X, coords[7] * N+Y,
                      coords[8] *N+X, coords[9] * N+Y,
                      coords[10] *N+X, coords[11] * N+Y,
                      )



root.mainloop()